Josie Maran Model Citizen Argan Oil Hair Serum With RadianceWe've always been fans of Josie Maran's Argan Oil, but this brand new formula, is scented with a subtle honey lavender chamomile fragrance and infused with a shimmer that makes strands shiny. Even better, ten percent of the proceeds of this limited-edition collection go to the the Ian Somerhalder Foundation, founded by the actor and activist, to help build the ISF Animal Sanctuary, which is dedicated to rehabilitating neglected and mistreated animals.

In honor of Earth Day, our StyleList editors have explored the natural, the organic, and the plant-based to bring you our very favorite Earth-friendly products.

Our first stop: hair care. Natural haircare formulas can sometimes get a bad rap, because all those wax and silicones used in regular products do a pretty nice job at making our strands shiny. However, unnatural ingredients like parabens and sulfates are no good in the long run - they cause frizz, dryness, and dullness, among other things.

Click through the gallery to see our favorite products that are derived either all or partially from Mother Earth. After all, you want your hair to feel as healthy as it looks!